| Symptoms usually appear from August to December. The needles turn pale green or yellow then brown and remain attached to the tree. Symptoms progress through the entire tree very quickly, turning it yellow and wilted.
Branches and twigs become dry and brittle. When branches are removed from the tree the wound site will remain dry with little resin flow, compared to normal, healthy trees where branch removal will result in thick, sticky resin flow from the wound site.
Trees infested with the pinewood nematode die very quickly, usually within three months. |
Remove and burn infected trees in fall or very early spring, before the pine sawyer beetles can emerge.
Do not save wood from infested trees for firewood.
Avoid planting Scotch pine in areas with a history of pine wilt.
Properly maintain trees through watering, mulching, and fertilization for vigorous, healthy trees not susceptible to pine sawyers. |
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